Ventilating attachment for stoves



(No Model.)

w. M. BRINK ERHOFF. VENTILATING ATTAGHMENT FOR STOVES.

No. 346,717. Patented Aug. 3, 1886.

1 IIIIIIIIHHHH' N. vnsns. "lam-Lithographer. wmln mn, n. c.

UNITE STATES WARREN M. BRINKERHOFF, OF- AUBURN, NElV YORK.

PATENT Fries.

VE NTILA TING ATTACHMENT FOR STOV ES.

PECIFICATION forming part of Letters Patent No. 346,717, dated August 3, 1886.

' Application filed March .35, 1886. Serial No 196.560. (No model.)

To all whom it may concern: I

Be it known that I, WARREN M. BRINKER- HOFF,'of Auburn, in the county of Cayuga, in the State of New York, have invented certain new and useful Improvements in Ventilating Attachments for Stoves,of which the following is a specification.

My invention relates to ventilating attachments for stoves, and the pur ose thereof is to provide a construction whereby the required length of air-duet may be exposed to the heat to generate a strong ascending current'in the ventilating-passage without carrying the heating portion of said duct beyond or any'great distance beyond the wall of the stove.. It is also my purpose to providean air duct or passage so arranged as to receive throughout a portion thereof the heat developed by the Stove,'whereby an ascending current is generated when the portion exposed is arranged within a limited areacomparatively to the length of said duct, the arrangement being such as to avoid obstruction of the draft-space within the same. It is mylurther purpose to combine an air ductor passage with the section of'smoke-pipe which is adjacent to the is highest, the relative arrangement of the stove in such manner that said duct may receive the heat imparted by the products of combustion. passing through said pipe at a point near the stove where the temperature parts being such that the length'of duct necessary for the generation of a ventilating-current is combined within a comparatively limited space, said duct being advantageously exposed to the heat, and its weight being sustained by the smoke-pipe or its connections at or near the point where the latter unites with the stove.

My invention consists in the several novel features of construction and combinations of parts hereinafter fully described, and definitely pointed out in the claims annexed to this specification.

Referring to the drawings forming part of this application, Figure '1 is a view, partially in elevation and partly in vertical section, illustrating the application of my invention in one form to astovc. Fig. 2 is a transverse section showing the air-passage and that portion of the pipe next to the stove and illustrating one method of uniting or combining the two. Fig. 3 is a similar section upon the line X X,-Fig. 4.. Fig. 4 isa central vertical section taken longitudinally of the section of pipe next to the stove, showing one manner of combining'my invention therewith. Fig. 5 is a in section,of a part of the stove, together with a portion of thesection of pipe engagingtherewith, showing a modified arrangement of the parts shown in Fig. 1.

My present invention is an improvement upon that shown, described, and claimed by me in Letters Patent of the United States No. 339,966, dated April 13, 1886, wherein I have covered the combination with the stoveforheating apartments of an elbow having an air duct or passage which follows the wall of said elbow, and lies adj acentthereto and discharges into the elbow or smoke-pipe at one end, and atthe other extremity receives the air taken from a point near the floor and having. comparativcl y low temperature, besides being mingled with carbonic-acid gas and other injurious or poisonous vapors, whereby the cold lower strata of air and the intermingled gases are carried off and the temperature of the apartment equalized.

In the annexed drawings, the reference nu meral 1 designates the stove, which may be of any known or convenient construction. The products of combustion are conveyed from the stove by a section of smoke-outlet, 2, of any suitable form or construction, a straight pipe being illustrated in the present case, Ido not limit my invention to the employment of such a'form. Combined with the outlet 2 is a continuation of the ventilator-passage 4, (designated in the drawings 3,) which follows though the wall of said outlet, and may form either a complete or a partial annulus, or a complete or a partial spiral, as the case may be; or,wl1en the ventilator-passage is arranged within or attached to the stove, it may be so placed asv to derive sufficient heat from the fire-pot or 4 5 l outlet receives its strongest support, and by giv- '.is malntalned under all circumstances withstove-plates to generate an ascending air-current. One end of this passage discharges into the smoke-outlet, and the other end receives air taken from a point outside the stove and near the floor by'the lower part of the ventilatorpassage, which may be placed inside or outside the wall of'the stove. The air-passage may be arranged either inside or outside the smokeontlet 2, and this portion thereof may, as already stated, consist. of a simple annulus, either complete or incomplete, as shown in Figs. 1, 2, 3, 4, 5, and 7, of a spiral, as in Fig. 6. It may also consist of a separate duct or pipe attached to or upon the wall of the smokeoutlet in any manner, or it may simply lie or be held adjacent to the outlet, or it may be formed integral with the wall of the smokeoutlet. Again, the discharge end of the airpassage may simply open into'or through the wall of the smokeoutlet, or it may be slightly projected within the same, and may be turned inthe direction of the draft-currents,as shown in Fig. 6. \Vhere the annulus form of airpussagc is used, it may in some cases be found desirable to construct it as shown in Fig. 5, wherein the ascending air-current passes on both sides of the outlet 2 and unites at a common discharge-opening, 5, where the air enters the smoke-outlet. This form of construction, as well as that shown in Figs. 3 and 4,

may be applied to an internal] -arranged passage without substantial cha As already stated, I may apply the portion 3 of the air-passageiuside or outside of the smokeoutlet, and in any of the forms shown or in any equivalent thereof. The form shown inl ig. l is deemed very eil'ective, and in many cases preferable to other constructions, as the turn of air-passage near the entrance to the smokeoutlet is surrounded by the escaping hot products of combustion, and the air within the passage is quickly and highly heated at that point, thus insuring a constant and effective draft. By my arrangement the weight is sustained at or near the point where the smokeing the air passing the annular or spiralform 'described a sufiicient length thereof is exposed to the heat-of the stove, so that an ascending urrent is not only generated, but

out materially.diminishing the draft. At the same time that portion of the air-passage exposed tojthe heat is located within a comparatively limited area or section of pipe, in place of being materially extended longitudinally through the same. In this manner the construction is simplified, the air-pnssage receiv'es the same or nearly the same degree of heat at each point, and the draft-space is not necessarily obstructed. It is unnecessary to specify that the air-passage may be circular in cross-section, or of any other form. By extending the same laterally-that is to say, making that diameter which is parallel with the axis of the stove or outlet very great comlating-passage separate from the fines of the stove, communicating with the outer air at.

its lower end and discharging into the smokeoutlet of the. stove at its upper end, the said passage diverging out of a direct course and traversing a greater distance than the length of the parts of the stove or its connections adjacent thereto, the whole of the diverging portion of said passagelying in close proximity to the wall of the stove or its outlet, sub stantially as described.

2. The combination,with astovc, of a ventilating-passage separate from the flues of the stove, communicating at its lower end with the outer air and discharging into the smokeoutlet within a short distance of the stove, said ventilating-passage being provided in termediate its end with an annular portion, substantially as described.

3. The combination, with a stove, of an annular passage lying adjacent to the walls of the smoke-outlet, and a ventilating-passage communicating with the outer air at its lower end, and with the said annular passage at its upper end, the said annular passage also communicating with the smoke-outlet within a short distance of the stove, substantially as described;

4. The combination, with a store, of an annular passage lying adjacent to the walls of the smoke-outlet, and a Ventilating-passage communicating with the outer air at its lower end, and with the said annular passage at its upper end, the said annular passage communicating with the smoke-outlet on the side opposite the entrance of the ventilating-passage, substantially as described.

5. The combination,with astove, of aventilating-passage separate from the flucs of the stove, communicating with the air at its lower end, and rising therefrom and discharging into the smoke-outlet of the stove, the said passage being provided intermediate its ends with a return portion, the direct and return portion lying adjacent to the wall of the stove or smoke-outlet, substantially as described.

6. The combination,with a stove, of a. ventilating-passage. communicating with the open air atits lower end, the said passage at its upper end being provided with an annular or coiled portion lying adjacent to the walls of the smoke-outlet of the stove and discharging into the same, substantially as described.

In testimony whereof I have ailixcd my signature in presence of two witnesses.

WARREN M. BRTNKERHOFF.

Witnesses:

DEXTER A. SMITH, G. G. Pnanson. 

